Geometrical Optics Test 03

Total Questions: 19

1 - To see stomach problems we use:

A ) gastroscope ✅
B ) bronchoscope
C ) cystoscope
D ) stethoscope

3 - The refractive index of air is:

A ) 6
B ) 1.0003 ✅
C ) 7
D ) 2

4 - power of lens is:

A ) q/p
B ) 1/q
C ) 1/p
D ) 1/f

5 - Speed of light in air is:

A ) 3 x 10⁸ ms-¹ ✅
B ) 340ms-¹
C ) 3 × 10⁵ms-¹
D ) 3×10¹¹ms-¹

6 - A normal eye can see near of the clearly at a distance of:

A ) 20 cm
B ) 25 cm ✅
C ) 30 cm
D ) 35 cm

7 - Power of a convex lens is 10D its focal length is:

A ) 100 m
B ) 10 m
C ) 1 m
D ) 0.1 m ✅

8 - The unit of power of lens is:

A ) Meter
B ) Diopter ✅
C ) Hertz
D ) Volt

9 - The refractive index of diamond is

A ) 1.66
B ) 1.52
C ) 2.42 ✅
D ) 2.4

10 - The speed of light in water is:

A ) 2.1 ×10³ ms-¹
B ) 2.5×10³ ms-¹ ✅
C ) 2.3×10⁸ms-¹
D ) 2.3×10-8 ms-¹

11 - A converging lens becomes a magnifying glass when an object is placed:

A ) Outside of focal length ✅
B ) Inside the focal length
C ) equal of focal length
D ) at double of focal length

12 - In compound microscope the objective have focal length than eye- piece:

A ) Smaller
B ) larger ✅
C ) equal
D ) equal and larger

13 - The defect of vision for Farsightedness "can be corrected with the aid of suitable.

A ) Concave lens
B ) Convex lens ✅
C ) Convex mirror
D ) Double concave lens

14 - The value of refractive index of water is:

A ) 2.33
B ) 1.36
C ) 1.33 ✅
D ) 1.39

15 - The formula of focal length is:

A ) f=R/2 ✅
B ) f=2R
C ) fR=2
D ) R=f/2

16 - Optical fibres works on the principle of:

A ) reflection
B ) refraction
C ) total internal reflection ✅
D ) diffraction

17 - The refractive index of ice is:

A ) 1.00
B ) 1.33
C ) 1.31 ✅
D ) 2.42

18 - The change in the focal length of the eye lens is called.

A ) Modification
B ) Induction
C ) Accommodation ✅
D ) Distinct vision

19 - The types of spherical mirrors are:

A ) 2 ✅
B ) 4
C ) 6
D ) 8